In May 2004 leading atheistic philosopher Antony Flew spoke at a
symposium at New York University where he was supposed to be debating
believers. He shocked his audience by announcing that he now
believed there is a God. He explained to the audience why he
changed his mind.

What I think the DNA material has done is
that it has shown, by the almost unbelievable complexity of the
arrangements which are needed to produce (life), that intelligence must
have been involved in getting these extraordinarily diverse elements to
work together. It's the enormous complexity of the number of
elements and the enormous subtlety of the ways they work
together. The meeting of these two parts at the right time by
chance is simply minute. It is all a matter of the enormous
complexity by which the results were achieved, which looked to me like
the work of intelligence.

Antony Flew, There Is A God: How
the World's Most Notorious Atheist Changed His Mind,
HarperCollins Publishers, 2007.